Some month ago I started to look into some RFID-based TOTP hardware tokens. Out of curiosity I bought some and started to reverse engineer them. This was just meant to be a learning experience. My colleague, Matthias Deeg, got interested as well and bought another token. Together we learned a lot about those devices. This post tells the story about the research I have done on the Token2 OTPC-P2. Links to Matthias’s research on the Protectimus SLIM can be found at the end of this post. Read more

Some time ago I came across a homee Brain Cube. This cube is an universal central device to connect smart home components of different vendors together and to control them. After opening up the case of this smart home bridge, I saw some potential to gain root access to the operating system running on it. Read more